Re: Help!
Your kid needs a father but not one like him. The one who constantly lies, doesnt have enough balls to stand up to what he did, using/abusing you at his own leaisure. I would suggest that you need to move on with your life. But it is easier said than done. You should let his parents know that they failed in raising a 'man'. Do NOT give him anymore leeway. Stick to what you need of him to prove that he wants to get back with all the loyalty, honesty and will to fight out the tough times.
It would be pretty naive of me or anyone to say that you are still young and can move on because after such an experience you will be allergic to relationships for a long while. I hope you come out of it stronger and wiser.